Pulsator for milking-machines.



E. SCHLUKEBIER.

PULSATOR Foe MILKING MAmNES.

APPLICATION FILED APR. 4,191R.

Patented Sept. 10, 1918.

HELE- NVE NT OR EDWARD SC HLUKEBIER, BY HIS ATTORNEYI we Nanms argus cu.. mmm-urna.. wnsnmmmv, n. c.

UNITED STATES PATENT FFICE.

EDWARD SCHLUKEBIER, 0F ST. PAUL, MINNESOTA.

PUILSATOR FOR MILKINGr-MACHINES.

Application led Apr14, 1918.

To all whom t may concern.

Be it known that I, EDWARD SGHLUKEBIER, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a new and useful Pulsator for Milking-Machines, of which the following is a specification.

My invention relates to pulsators for milking machines, and the object is to provide an eiiicient, sanitary, durable and easily manufactured and operated device of said kind.

In the accompanying drawing, Figure 1 is a side elevation of my improved pulsator. Fig. 2 is a section on the line 2-2 in Fig. 1. Fig. 3 is a section on the line 3 3 in Fig. 1. Fig. 4 is a perspective detail view of the valve-holding device of the apparatus.

Referring to the drawing by reference numerals, 1 designates the upper portion of a milking pail upon which the base plate 2 of the pulsator serves as a cover. Upon said plate 2 is fixed the usual handle 3, and beyond each side thereof is provided a suction chamber 4 having attached at its top a hose 5 or 5a one of which is connected to the one end and the other to the other end of a double acting pump cylinder (not shown) of an air suction pump run by suitable power.

Each suction chamber 4 is also provided with two lateral hose nipples 6, 6a, each of which is provided with a shut-off cock 7 and adapted to receive one end of a hose (not shown). The hose from one nipple 6 is provided with two teat-cups (not shown) adapted to go upon two teats 0f a cow and the hose from the nipple 6 on the other suction chamber is provided with two teat-cups going upon the other teats of the same cow, so as to make the suction act alternately on two teats at a time.

Each suction chamber is composed 0f an upper member 4 and a lower member 4a. The upper member is threaded upon a projection 8 extending from the lower member up through an aperture in the cover 2, and each member is provided with a soft washer 9 to make i1; fit tight against the cover 2.

The lower members 4a are curved toward Specification of Letters Patent.

Patented Sept. 10, 1918.

serial No, 226,563.

each other and formed each with a vertical face 10 having in its lower portion a halfmoon-shaped outlet port 11 for the milk to escape through into the pail. Said port is normally closed by a sheet rubber valve l2 whose upper portion 12 is removably held against the upper portion of the valve seat 10 by a Hat bar 13 fixed on one of the legs 14 of an inverted U-shaped spring l5. The two valves are thus held by the same one spring. Each valve is protected by a guard 16 formed about the main portion of the valve seat, and the valve, which does not quite fill within the guard has its upper portion formed with two projections 12b resting upon the ends 16a of the guard so as to aid in holding the valve in proper position; and to hold each member 4a in proper position said members are each provided with a finger 17 which in assembling the parts is placed between two studs 18 formed at the under side of the cover 2.

The advantages resulting from the structure described are among others, that both in the manufacturing and repair of the device the lower members 4a may be removed from the plate 2 while the valve seats 10 are being inished in a lathe or drill press, and both members 4 and 4a may readily be separated lfor purpose of cleaning; and as the valves 12 are most apt to need cleaning and repair they are made most readily detachable. Other advantages will be pointed out in the claims.

That I claim is 1. In a pulsator for milking machines, the combination with a frame plate adapted t0 serve as cover upon the milking vessel, of two suction chambers and means for attaching an air suction pump thereto to cause suction alternately in said chambers, means on said chambers adapted to be connected with one or more teats of the same cow to each chamber, said chambers extending downwardly through the frame plate and having each an opening surrounded by a plane valve seat arranged in vertical position and parallel one to the other, flat flexible valves placed one against each valve seat and a U-shaped spring placed between said valves and provided at its arms with bars holding valve seats having each a guarding rim the valves firmly but detaohaloly against the about the moving part ofthe valve and said valve `seats above the openings in the seats. valves having each tvvo lateral projections 10 2. The structure-Specified. in claim 1,said supported upon the ends of said guarding 5 valve Seatshaving' eaoh its opening or' port rim.

in the lovver portion. In testimony whereof l ax my signature. 3. The structure specifiedv in claim 2 said EDWARD SCHLUKEBIER. 

